APOD

Explanation: Eclipses tend to come in pairs. Twice a year, during an eclipse season that lasts about 34…

Explanation: Known for its bright and fast meteors, the annual Perseid Meteor Shower comes to planet Earth’s skies…

Explanation: What’s happening to this meteor? This bright meteor streak appeared and disappeared quickly during a long exposure of the Great…

Explanation: What’s happening to this cloud? Ice crystals in a distant cirrus cloud are acting like little floating…

Explanation: The Buck Moon is a traditional name for the full moon of July. In this colorful Adriatic…

Explanation: The Dark Doodad Nebula drifts through southern skies, a tantalizing target for binoculars toward the small constellation…

Explanation: The Dark Doodad Nebula drifts through southern skies, a tantalizing target for binoculars toward the small constellation…